5 Signs You Need New Guttering (Before It Damages Your Home)

The Key Difference: Repair vs Replace

The rule of thumb: if a repair costs more than 30% of what a replacement would cost, replace. If you've had two or more call-outs in three years for the same run of guttering, replace. Guttering that's patched and re-patched develops new failure points faster because the underlying issue — usually material degradation or structural movement — hasn't been addressed.

Sign 1: Visible Cracks, Splits, or Holes

Check gutter runs after a hard frost. UPVC becomes brittle at low temperatures and is most vulnerable to impact damage in winter — overhanging branches, ladders leant against the gutter, and ice build-up are all common causes. A crack you can see from ground level is already large enough to be directing water onto the fascia or into the wall below.

Small holes — from rust on steel guttering or puncture damage — are similarly unfixable long-term. Rust spreads; the hole gets larger each season. If you see rust staining on a downpipe or below a gutter run, the system is near end of life.

Sign 2: Persistent Leaks at Joints

Persistent joint leaks on an older system are a sign that the entire run is at the same stage of degradation. Re-sealing one joint provides a few months before the next one opens. At this point, full replacement with a seamless aluminium system — which has no mid-run joints — is the permanent solution rather than a cycle of repeated repairs.

Signs of historic joint leaks: green algae staining below joints, paint lifting from the fascia directly under a joint, and efflorescence (white salt deposits) on masonry below gutter runs.

Sign 3: Sagging or Pulling Away from the Fascia

Sagging usually means failed or incorrectly spaced brackets. In older installations, brackets were often placed too far apart — 1m spacing is correct; 1.5m or more is common in budget installations from the 1990s and early 2000s. When one bracket fails, the load transfers to the adjacent ones and the cascade accelerates.

Where the fascia board itself has rotted or cracked, there's nothing for the replacement bracket to fix into. In this case the fascia needs replacing before or alongside the guttering — ignore this and the new installation will fail in the same way within a few years.

Sign 4: Water Running Behind the Guttering

Check by standing below the gutter during moderate rainfall. If you see water streaming down the fascia rather than dropping from the gutter front or exiting at the downpipe, water is getting behind the system. Damp patches on the soffit below gutter runs are the dry-weather indicator of the same problem.

Sign 5: Overflowing in Normal Rainfall

Older homes often have guttering installed to standards from the 1970s or earlier, when smaller profiles were standard. Modern building practice uses larger-profile guttering on anything other than a small lean-to roof. If you have a large roof area draining into a 75mm half-round gutter with a single 68mm downpipe, overflows in heavy rain are structural, not incidental.

A gutter survey from Bespoke Guttering includes a capacity assessment — we calculate the required drainage capacity based on your actual roof area and specify the correct profile and downpipe sizing before installation.

What Happens If You Ignore Failing Guttering

The repair cost hierarchy: gutter clearance (£60–£120) → joint repair (£80–£200) → full gutter replacement (£400–£1,200 depending on property size) → fascia and soffit replacement (£800–£2,500) → damp treatment and internal remediation (£1,500–£5,000+). Each level is preventable by addressing the one before it.

On two-storey properties, working at height carries its own risk. A professional gutter clearance costs £60–£120 and removes the risk entirely. Many guttering companies will combine a clearance visit with a structural inspection.

Frequently Asked Questions